Heat exchanger and related methods
Heat exchangers include a housing having an inlet and an outlet and forming a portion of a transition chamber. A heating member may form another portion of the transition chamber. The heating member includes a first end having a first opening and a second end having a second opening larger than the first opening. Methods of conveying a fluid include supplying a first fluid into a transition chamber of a heat exchanger, supplying a second fluid into the transition chamber, and altering a state of a portion of the first fluid with the second fluid. Methods of sublimating solid particles include conveying a first fluid comprising a material in a solid state into a transition chamber, heating the material to a gaseous state by directing a second fluid through a heating member and mixing the first fluid and the second fluid.
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This invention was made with government support under Contract Number DE-AC07-05ID14517 awarded by the United States Department of Energy. The government has certain rights in the invention.
CROSS-REFERENCE TO RELATED APPLICATIONSThis application is related to U.S. patent application Ser. No. 11/855,071 filed on Sep. 13, 2007, titled Heat Exchanger and Associated Methods, now U.S. Pat. No. 8,061,413, issued Nov. 22, 2011, U.S. patent application Ser. No. 12/938,761, filed on even date herewith, for Vaporization Chambers and Associated Methods, and U.S. patent application Ser. No. 12/938,967, filed on even date herewith, for Sublimation Systems and Associated Methods, the disclosure of each of which is hereby incorporated by reference in its entirety. This application is also related to U.S. patent application Ser. No. 13/284,737, filed on Oct. 28, 2011, titled Methods of Conveying Fluids and Methods of Sublimating Solid Particles, now U.S. Pat. No. 8,544,295, issued Oct. 1, 2013.
TECHNICAL FIELDEmbodiments of the invention relate generally to heat exchangers and methods associated with the use thereof. More specifically, embodiments of the invention relate to heat exchangers including a housing and a heating member configured to supply a fluid into communication with another fluid. Embodiments of the invention additionally relate to the methods of heat transfer between fluids, the sublimation of solid particles within a fluid, and the conveyance of fluids.
BACKGROUNDThe production of liquefied natural gas is a refrigeration process that reduces the mostly methane (CH4) gas to a liquid state. However, natural gas consists of a variety of gases in addition to methane. One of the gases contained in natural gas is carbon dioxide (CO2). Carbon dioxide is found in quantities around 1% in most of the natural gas infrastructure found in the United States, and in many places around the world the carbon dioxide content is much higher.
Carbon dioxide can cause problems in the process of natural gas liquefaction, as carbon dioxide has a freezing temperature that is higher than the liquefaction temperature of methane. The high freezing temperature of carbon dioxide relative to methane will result in solid carbon dioxide crystal formation as the natural gas cools. This problem makes it necessary to remove the carbon dioxide from the natural gas prior to the liquefaction process in traditional plants. The filtration equipment to separate the carbon dioxide from the natural gas prior to the liquefaction process may be large, may require significant amounts of energy to operate, and may be very expensive.
Small-scale liquefaction systems have been developed and are becoming very popular. In most cases, these small plants are simply using a scaled down version of existing liquefaction and carbon dioxide separation processes. The Idaho National Laboratory has developed an innovative small-scale liquefaction plant that eliminates the need for expensive, equipment intensive, pre-cleanup of the carbon dioxide. The carbon dioxide is processed with the natural gas stream, and during the liquefaction step the carbon dioxide is converted to a crystalline solid within a liquid natural gas process stream. The liquid/solid slurry is then transferred to a separation device, which directs a clean natural gas liquid out of an overflow, and a carbon dioxide concentrated slurry out of an underflow.
The underflow slurry is then processed through a heat exchanger to sublime the carbon dioxide back into a gas. In theory this is a very simple step. However, the interaction between the solid carbon dioxide and liquid natural gas produces conditions that are very difficult to address with conventional heat exchangers. In the liquid slurry, carbon dioxide is in a pure or almost pure sub-cooled state and is not soluble in the liquid. The carbon dioxide is heavy enough, relative to the density of the carrier liquid, to quickly settle to the bottom of most flow regimes. As the settling occurs, piping and ports of the heat exchanger can become plugged as the quantity of carbon dioxide builds. In addition to collecting in undesirable locations, the carbon dioxide has a tendency to clump together, making it even more difficult to flush through the system.
The ability to sublime the carbon dioxide back into a gas is contingent on getting the solids past the liquid phase of the gas without collecting and clumping into a plug. As the liquid natural gas is heated, it will remain at approximately a constant temperature of about −145° C. (at 50 psig (approximately 446 kPa)) until all the liquid has passed from a two-phase gas to a single-phase gas. The solid carbon dioxide will not begin to sublime back into a gas until the surrounding gas temperatures have reached approximately −60° C. While the solid carbon dioxide is easily transported in the liquid methane, the ability to transport the solid carbon dioxide crystals to warmer parts of the heat exchanger is substantially diminished as liquid natural gas vaporizes. At a temperature when the moving, vaporized natural gas is the only way to transport the solid carbon dioxide crystals, the crystals may begin to clump together due to the tumbling interaction with each other, leading to the aforementioned plugging.
In addition to clumping, as the crystals reach warmer areas of the heat exchanger they begin to melt or sublime. If melting occurs, the surfaces of the crystals become sticky, causing the crystals to have a tendency to stick to the walls of the heat exchanger and reducing the effectiveness of the heat exchanger and creating localized fouling. The localized fouling areas may cause the heat exchanger may become occluded and eventually plug if fluid velocities are not sufficient to dislodge the fouling.
BRIEF SUMMARYIn accordance with some embodiments of the present invention, a heat exchanger includes a housing having at least one inlet and at least one outlet. The housing forms a portion of a transition chamber within the heat exchanger. The at least one inlet and the at least one outlet are in communication with the transition chamber and the at least one outlet is positioned at an upper portion of the housing. The heat exchanger may further include a heating member disposed within the housing and forming another portion of the transition chamber. The heating member includes a first end having a first opening formed therein, the first opening in communication with a supply of at least one fluid, and a second end having a second opening formed therein, the second opening being larger than the first opening and the second opening being in communication with the transition chamber of the heat exchanger.
In additional embodiments, a method of conveying a fluid includes supplying a first fluid comprising at least one material into a transition chamber of a heat exchanger through an inlet formed in the heat exchanger, supplying a second fluid through an opening formed in an apex of a cone-shaped heating member and into an interior portion of the cone-shaped heating member forming a portion of the transition chamber, altering a state of the at least one material of the first fluid with the second fluid, and conveying the at least one material of the first fluid having the altered state out of the heat exchanger through an outlet of the heat exchanger located in an upper portion of the heat exchanger.
In yet additional embodiments, a method of sublimating solid particles includes conveying a first fluid comprising at least one material in a solid state into a transition chamber of a heat exchanger, heating the at least one material within the first fluid to a gaseous state including directing a second fluid at a temperature higher than a temperature of the first fluid into the transition chamber through a cone-shaped heating member and mixing the first fluid and the second fluid, and conveying the at least one material within the first fluid in the gaseous state out of the transition chamber with the first fluid.
The illustrations presented herein are not meant to be actual views of any particular material, apparatus, system, or method, but are merely idealized representations which are employed to describe embodiments of the present invention. Additionally, elements common between figures may retain the same numerical designation for convenience and clarity.
The term “fluid” as used herein means any substance that may be caused to flow through a conduit (e.g., nozzle, pipe, chamber, inlet, outlet, etc.) and includes but is not limited to gases, two-phase gases, liquids, gels, plasmas, slurries, solid particles, and any combination thereof.
As shown in
In some embodiments and as shown in
Referring still to
In some embodiments, the exit nozzle 136 may include a port (e.g., a threaded port 140) enabling connection of a sensor (e.g., a thermocouple, resistance temperature detector (RTD), a velocity sensor, etc.) for monitoring of the properties of the gases exiting the transition chamber 114. In some embodiments, the heat exchanger 110 may include one or more ports located at various positions in the housing 112 (e.g., proximate the transition chamber 114, heated fluid chamber 148, etc.) enabling monitoring of the properties of the materials contained in the heat exchanger 110.
The inlet 116 of the heat exchanger 110 may include inlet nozzle 142 having a flange 144. In some embodiments, the inlet nozzle 142 may be positioned at a midportion of the housing 112 of the heat exchanger 110 (e.g., between the lower portion 130 and upper portion 132 of the housing 112. For example, the inlet nozzle 142 may be positioned proximate to the second opening 128 at the second end 126 of the heating member 120. Such placement of the inlet nozzle 142 may enable a fluid to be supplied to the heat exchanger 110 at the second opening 128 at the second end 126 of the heating member 120. For example, a fluid (e.g., a gaseous material) including a material in a nongaseous state (e.g., a fluid, vapor, solid, etc.) may be supplied to the housing 112 of the heat exchanger 110 such that the portion of the fluid in the nongaseous state will be displaced (e.g., under a gravitational force) into the inner portion of the heating member 120 in a direction toward the first opening 124 at the first end 122 of the heating member 120.
The inlet nozzle 142 may be in communication (e.g., fluid communication) with one or more upstream components and may be coupled to the upstream components via the flange 144. For example, the inlet nozzle 142 may be sized to provide interconnections to upstream components (e.g., a vaporization chamber, another heat exchanger, a device configured to separate materials or differing states of materials (e.g., a hydrocyclone), etc.) and to provide gaseous material to upstream components at an acceptable or desirable velocity. In some embodiments, the upstream components may include one or more of the components, for example, disclosed in the above-referenced and incorporated by reference, U.S. patent application Ser. Nos. 12/604,139, 12/603,948, and 12/604,194. Further, in some embodiments, one or more upstream components may include one or more of the components disclosed in, for example, U.S. patent application Ser. No. 12/938,761, filed on even date herewith, for Vaporization Chambers and Associated Methods, the disclosure of which is hereby incorporated by reference in its entirety. For example, the inlet nozzle 142 may be coupled to the vaporization chamber disclosed in the above-referenced and incorporated by reference U.S. patent application Ser. No. 12/938,967, filed on even date herewith, for Sublimation Systems and Associated Methods. In such an embodiment, the inlet nozzle 142 may supply a fluid such as, for example, a fluid carrier (e.g., a gas or liquid) containing a material such as, for example, a particulate (e.g., a solid or liquid particulate) to the heat exchanger 110 from the vaporization chamber.
The heating member 120 may include a nozzle assembly 146 disposed at the first end 122 of the heating member 120. The nozzle assembly 146 may at least partially form the first opening 124 of the heating member 120. The nozzle assembly 146 may supply a fluid to a portion of the heat exchanger 110 (e.g., to the transition chamber 114). In some embodiments, the nozzle assembly 146 may be in communication with a volume of fluid (e.g., a fluid at a higher temperature than a fluid supplied to the heat exchanger 110 via the inlet nozzle 142). For example, the nozzle assembly 146 may be in communication with a volume of fluid in a heated fluid chamber 148. The heated fluid chamber 148 may be formed in the heat exchanger 110 at a lower portion 130 of the housing 112. In some embodiments, a portion of the housing 112 and a portion of the heating member 120 coupled to the housing 112 may form the heated fluid chamber 148. Fluid may be supplied to the heated fluid chamber 148 by an inlet 150 having an inlet nozzle 152 and a flange 154 for coupling to a source of the fluid. It is noted that, for clarity, the inlet 150 is depicted as being positioned in substantially the same plane as inlet 116. However, in some embodiments, inlet 150 may be offset from inlet 116 as depicted in
Referring still to
Referring back to
It is noted that while the embodiment of
In some embodiments, the heat exchanger 110 may include particle barrier located in the upper portion 132 of the housing 112 of the heat exchanger 110. For example, a deflection plate 162 may be positioned in the upper portion 132 of the housing 112. In some embodiments, the deflection plate 162 may have a substantially concave surface oriented in a direction toward the heating member 120 (i.e., a concave surface of the deflection plate 162 may face the heating member 120). In some embodiments, the deflection plate 162 may have a size that is smaller than the interior of the housing 112 of heat exchanger 110. For example, a diameter of the deflection plate 162 may be less than an inner diameter of the housing 112. The deflection plate 162 may be suspended within the housing 112 by supports 164. The supports 164 may be coupled to the deflection plate 162 and may extend to the inner surface 134 of the housing 112 and may be coupled thereto. The supports 164 and the deflection plate 162 be sized in the housing 112 to provide channels around the deflection plate 162 proximate to the inner surface 134 of the housing 112 enabling fluid to pass from the transition chamber 114 around the deflection plate 162 and to the outlet 118 of the heat exchanger 110. It is noted that while the embodiment of
In some embodiments, a particle barrier of the heat exchanger 110 may include a filter 166 disposed in the housing 112 of the heat exchanger 110. For example, the filter 166 may be positioned in the upper portion 132 of the housing 112 between the deflection plate 162 and the outlet 118 of the heat exchanger 110. The filter 166 may be formed from any material capable of at least partially restricting flow of a solid or liquid and at least partially enabling flow of a fluid (e.g., a gas) therethrough. For example, the filter 166 may be formed from a stainless steel demister, a woven wire mesh, a fiber mesh, etc. In some embodiments, the filter 166 may be supported in the heat exchanger 110 by the deflection plate 162, the supports 164, or both the deflection plate 162 and the supports 164. In some embodiments, the filter 166 may be attached to a portion of the housing 112. In some embodiments, the filter 166 may substantially fill a portion of the heat exchanger 110 extending between the deflection plate 162 and the outlet 118 of the heat exchanger 110.
In some embodiments, a fluid bypass 170 (e.g., a gas bypass valve) may be disposed between the heated fluid chamber 148 and the transition chamber 114. For example, the fluid bypass 170 may be located proximate to the second end 126 of the heating member 120. The fluid bypass 170 may enable the flow rate and velocity of a fluid to be reduced through the nozzle 156 by venting a portion of the fluid in the heated fluid chamber 148 directly into the transition chamber 114 bypassing the nozzle 156. In other words, the fluid bypass 170 may vent a portion of the fluid within the heated fluid chamber 148 into the transition chamber 114, thereby, reducing a pressure of the fluid within the heated fluid chamber 148.
With continued reference to
As the first fluid is supplied to the transition chamber 114 in the housing 112 of the heat exchanger 110, the temperature of the first fluid or portions thereof may be increased by a second fluid (e.g., a heating fluid). For example, the second fluid (e.g., a methane gas, for example, a methane gas provided from a LNG system that has been previously processed in the system to substantially remove particles of CO2 therefrom) may be supplied through the inlet nozzle 152 of the inlet 150. In some embodiments, the second fluid may be supplied to the heat exchanger 110 at a temperature greater than a temperature in the transition chamber 114. For example, the second fluid supplied the heat exchanger 110 at a temperature greater than the temperature of one or more fluids (e.g., a portion of the first fluid) in the transition chamber 114. By way of further example, the first fluid may comprise particles of CO2 in a methane carrier and the second fluid may be supplied to the heat exchanger 110 (e.g., into the heated fluid chamber 148) at a temperature that is greater than the sublimation temperature of the CO2 particles (e.g., approximately −80° C. to −60° C. (this temperature may vary depending upon the pressure of the fluid environment)). In some embodiments, the second fluid may be heated in the heated fluid chamber 148 of the heat exchanger 110 to exhibit a temperature greater than a temperature in the transition chamber 114.
The second fluid may enter the heat exchanger 110 through the inlet nozzle 152 and into the heated fluid chamber 148. In some embodiments, the second fluid may be pressurized in the heated fluid chamber 148 (e.g., by supplying the second fluid through the inlet nozzle 152 at a rate greater than the rate that the second fluid is removed from the heated fluid chamber 148 into the transition chamber 114). In some embodiments, the second fluid in transition chamber 114 may act to heat a surface forming the transition chamber 114. For example, as discussed above, the second fluid within the heated fluid chamber 148 may heat a surface of the heating member 120, which forms a portion of the transition chamber 114. Heating a surface of the heating member 120 may act to increase the temperature of the heating member 120 and to at least partially prevent particles from attaching or sticking to the surfaces of the heating member 120.
The nozzle assembly 146 and, in particular, the orifice 158 of the nozzle 156 may act to supply the second fluid into the transition chamber 114 through the first opening 124 at the first end 122 of the heating member 120. The nozzle 156 may be sized to provide a jet (e.g., a relatively high-velocity, high-pressure jet) of a second fluid 168 that may travel through the nozzle 156 into the transition chamber 114 in a direction toward the upper portion 132 of the housing 112. It is noted that the jet of second fluid 168 is illustrated in
The jet of second fluid 168 may form a column of gas that elevates the first fluid, including any particulate therein, from the lower portion 130 of the housing 112 proximate the heating member 120 toward the upper portion 132 of the housing 112. As the jet of second fluid 168 elevates the first fluid, including any particulate therein, the jet of second fluid 168 may act to heat the second fluid. The transition chamber 114 may enable the first fluid and the second fluid to mix and enable energy (e.g., heat) contained in the second fluid to transfer to the first fluid, thereby, altering a state (e.g., phase) of at least a portion of the first fluid.
For example, the first fluid may enter into the heat exchanger 110 at the inlet 116 that is located in a relatively lower velocity area as compared to an area in the housing 112 proximate to the jet of second fluid 168 extending from the nozzle 156 at the first end 122 of the heating member 120. Once in housing 112, a portion of gas or liquid contained the first fluid (e.g., gaseous or liquid methane) may be swept toward the outlet 118 of the heat exchanger 110 (e.g., as the gas or liquid tends to flow to a region of the housing 112 proximate the outlet 118 having a relatively lower pressure). In some embodiments, a portion of gas or liquid contained the first fluid may be heated once in the transition chamber 114 and may be swept (e.g., by the force of the jet of second fluid 168) to the outlet 118 of the heat exchanger 110 and removed from the heat exchanger 110. For example, material in a gaseous state in the first fluid may enter the housing 112 through the inlet 116 and the relatively higher temperatures in the transition chamber 114 provided by the jet of second fluid 168 may act to heat and direct the material in the gaseous state to the outlet 118 of the heat exchanger 110. Similarly, material in a liquid state in the first fluid may enter the housing 112 through the inlet 116. The material in the liquid state may travel toward the lower portion 130 of the housing 112 proximate the heating member 120 under a gravitation force. The relatively higher temperatures in the transition chamber 114 provided by the jet of second fluid 168 may act to heat and vaporize the material in the liquid state. After vaporization, the material, now in a gaseous state, may be further heated and directed to the outlet 118 of the heat exchanger 110.
Particles (e.g., particulates, solids, liquids, etc.) in the first fluid (e.g., particles of CO2) may fall under a gravitation force in a direction toward the jet of second fluid 168 at the first end 122 of the heating member 120. The cone-shaped heating member 120 may act to direct the particles toward the jet of second fluid 168. In other words, the cone-shaped heating member 120 may direct the particles downward through an inner portion of the heating member 120 along the diagonal sides of the heating member 120 toward the relatively smaller first opening 124 of the heating member 120. Further, the surface of the heating member 120 heated by the second fluid contained in the heated fluid chamber 148 may act to heat the particles as the particles travel downward through the heating member 120 toward the jet of second fluid 168 extending from the nozzle 156. As the particles travel toward the jet of second fluid 168, the particles may be swept up in the jet of second fluid 168 and elevated in a direction toward the upper portion 132 of the housing 112. For example, the jet of second fluid 168 may create a fluidized bed of particles. When the particles are located in the jet of second fluid 168, the velocity of the jet of second fluid 168 may act to elevate and rotate the particles enabling heating of the particles on a substantial portion of the external surface area of the particles. In some embodiments, the nozzle 156 and the second fluid 168 (e.g., the pressure of the second fluid in the heated fluid chamber 148, the size and shape of the nozzle 156, or combinations thereof) may be selected to provide a jet of second fluid 168 that may suspend an average-sized particle at a midsection of the heating member 120 between the first end 122 and second end 126. The velocity variance of the jet of second fluid 168 in the heating member 120 extending from the first opening 124 toward the second opening 128 may act to suspend the particles in the heating member 120 based on the size and weight of each particles. For example, the nozzle 156 and the second fluid 168 may be selected to provide a jet of second fluid 168 having a velocity of approximately 120 feet per second (ft/sec) (approximately 36.6 meters per second (m/s)) proximate to the nozzle 156 at the first end 122 of the heating member 120. Further, the heating member 120 and the housing 112 may be sized to provide a velocity of the jet of second fluid 168 proximate the second end 126 of the heating member of approximately 0.13 feet per second (ft/sec) (approximately 0.04 meters per second (m/s)). As the particles float in the stream of relatively warmer gas provided by the jet of second fluid 168, the particles may be heated and the state of the particles may be altered to a gaseous state. As portions of each particle are converted to a gaseous state, the particles will reduce in size and weight, enabling the particles to float higher in the transition chamber 114, until the particles are substantially completely altered to a gaseous state (e.g., sublimed).
In some embodiments, the particles may be elevated to the deflection plate 162 located in the upper portion 132 of the heat exchanger 110. The deflection plate 162 may act to direct the particles toward an area of relatively lower velocity proximate to outer portions of the housing 112 (e.g., proximate to the inner surface 134 of the housing 112) and away from the central portion of the housing 112 having the jet of second fluid 168 extending therethrough. In some embodiments, the deflection plate 162 may also act to redirect the jet of second fluid 168 toward outer portions of the housing 112 and may act to force the particles downward toward the heating member 120. In some embodiments, as the velocity of the jet of second fluid 168 decreases as it approaches the upper portion 132 of the housing 122, the particles may travel away from the central portion of the housing 112 and the path of the jet of second fluid 168 and may fall back toward the heating member 120.
As before, once the particles are located in a relatively lower velocity area as compared to an area in the housing 112 proximate to the jet of second fluid 168 extending from the nozzle 156 at the first end 122 of the heating member 120, the particles may fall under a gravitation force in a direction toward the jet of second fluid 168 at the first end 122 of the heating member 120. The process heating and elevating the particles may be repeated until the temperature of the particles have been raised to sufficiently transition the particles to a different state of matter (e.g., to a gaseous state). For example, particles of CO2 (e.g., solid crystals of CO2) may be supplied to the heat exchanger 110 through the inlet 116 at a temperature lower than the sublimation temperature of CO2 (e.g., −60° C. (this temperature may vary depending upon the pressure of the fluid environment)). The particles of CO2 may fall under a gravitation force and be elevated by the jet of second fluid 168, as described above, until the temperature of the particles of CO2 is raised to above the sublimation temperature of CO2. The particles of CO2 may begin to sublimate into a gaseous state and may travel (e.g., be directed by the jet of second fluid 168) toward the outlet 118 of the heat exchanger 110.
The filter 166 disposed in the upper portion 132 of the heat exchanger 110 may also act to restrict flow of particles traveling toward the outlet 118 and trap the particles therein. In some embodiments, gradual heating of the particles trapped in the filter may transition the particles to a gaseous state, which may then travel through the filter 166 to the outlet 118 of the heat exchanger 110.
In view of the above, embodiments of the present invention may be particularly useful in providing an apparatus and methods enabling the effective and efficient conveyance and sublimation of solid particles within a fluid. Embodiments of the present invention may further be useful for a variety of applications other than the specific examples provided. For example, the described apparatus and methods may be useful for the effective and efficient mixing, heating, cooling, and/or conveyance of fluids containing sticky, corrosive, and/or reactive chemicals.
While the invention may be susceptible to various modifications and alternative forms, specific embodiments of which have been shown by way of example in the drawings and have been described in detail herein, it should be understood that the invention is not intended to be limited to the particular forms disclosed. Rather, the invention includes all modifications, equivalents, and alternatives falling within the scope of the invention as defined by the following appended claims and their legal equivalents.
Claims
1. A method of conveying a fluid, the method comprising:
- supplying a first fluid comprising at least one material into a transition chamber of a heat exchanger through a first inlet at a first location in the heat exchanger;
- supplying a second fluid into the heat exchanger through a second inlet at a second location in the heat exchanger;
- supplying the second fluid into the transition chamber through an opening formed in an apex of a cone-shaped heating member and into an interior portion of the cone-shaped heating member forming a portion of the transition chamber;
- altering a state of the at least one material of the first fluid with the second fluid; and
- conveying the at least one material of the first fluid having the altered state out of the heat exchanger through an outlet of the heat exchanger located in an upper portion of the heat exchanger, wherein the outlet of the heat exchanger located in the upper portion of the heat exchanger is positioned relatively higher in the heat exchanger than both the first location of the first inlet and the second location of the second inlet.
2. The method of conveying a fluid of claim 1, wherein supplying the first fluid comprising at least one material into the transition chamber of the heat exchanger comprises supplying a first fluid comprising at least one gaseous material and at least one solid material into the transition chamber of the heat exchanger and wherein altering a state of the at least one material of the first fluid with the second fluid comprises transitioning the at least one solid material to at least another gaseous material with the second fluid.
3. The method of conveying a fluid of claim 2, wherein conveying the at least one material of the first fluid comprises conveying the at least one gaseous material and at least one solid material through the outlet.
4. The method of conveying a fluid of claim 1, wherein supplying the second fluid through the apex of the cone-shaped heating member comprises:
- supplying the second fluid through the second inlet formed in the heat exchanger and into a heated fluid chamber at least partially surrounding the cone-shaped heating member and in communication with the opening formed in the apex of the cone-shaped heating member; and
- requiring the second fluid to enter the interior portion of the cone-shaped heating member through the opening formed in the apex of the cone-shaped heating member to substantially isolate the heated fluid chamber from the interior portion of the cone-shaped heating member.
5. The method of conveying a fluid of claim 4, further comprising heating a surface of the cone-shaped heating member with the second fluid in the heated fluid chamber.
6. The method of conveying a fluid of claim 1, further comprising:
- supplying the first fluid at a first temperature into the transition chamber;
- supplying the second fluid at a second temperature greater than the first temperature; and
- conveying the first fluid and the second fluid out of the transition chamber through the outlet at a third temperature different than each of the first temperature and the second temperature.
7. The method of conveying a fluid of claim 6, further comprising:
- supplying at least one material of the first fluid into the transition chamber in a solid state; and
- conveying the at least one material of the first fluid out of the transition chamber in a gaseous state.
8. The method of conveying a fluid of claim 1, further comprising:
- supplying at least one material of the first fluid into the transition chamber in a solid state; and
- forcing the at least one material of the first fluid in the solid state away from the apex of the cone-shaped heating member with the second fluid.
9. A method of conveying a fluid, the method comprising:
- supplying a first fluid comprising at least one material into a transition chamber of a heat exchanger through a first inlet at an upper portion of the heat exchanger;
- supplying a second fluid through a heating member disposed within the heat exchanger and forming a portion of the transition chamber, comprising: supplying the second fluid through a first end of the heating member, the first end positioned at a lower portion of the heat exchanger, the heating member having a first opening at the first end that is smaller than a second opening of the heating member at a second end of the heating member, an entirety of the second opening and the second end of the heating member being positioned relatively higher in the heat exchanger than an entirety of the first opening and the first end of the heating member and positioned proximate the upper portion of the heat exchanger and the inlet and being in communication with the transition chamber of the heat exchanger;
- altering a state of the at least one material of the first fluid with the second fluid;
- conveying the at least one material of the first fluid having the altered state out of the heat exchanger through an outlet of the heat exchanger located in the upper portion of the heat exchanger; and
- directing at least a portion of at least one of the first fluid and the second fluid within the transition chamber in a direction toward the heating member with a deflection plate disposed in the upper portion of the housing between the second end of the heating member and the outlet.
10. The method of conveying a fluid of claim 9, further comprising heating a surface of the heating member.
11. The method of conveying a fluid of claim 10, wherein heating a surface of the heating member comprises supplying the second fluid at a temperature greater than a temperature of a fluid within the transition chamber to a heated fluid chamber positioned proximate and at least partially surrounding the heating member.
12. The method of conveying a fluid of claim 9, further comprising flowing the second fluid through a nozzle assembly disposed at the first end of the heating member.
13. The method of conveying a fluid of claim 11, further comprising separating the heated fluid chamber from the transition chamber with the heating member to substantially prevent the second fluid in the heated fluid chamber from being placed in communication with the first fluid in the transition chamber except through the first opening in the heating member.
14. The method of conveying a fluid of claim 9, further comprising at least partially restricting flow of at least one of a liquid and a solid from the transition chamber to the outlet with a filter disposed within the housing between the transition chamber and the outlet.
15. A method of conveying a fluid, the method comprising:
- conveying a first fluid comprising at least one material in a solid state into a transition chamber of a heat exchanger;
- heating the at least one material within the first fluid to a gaseous state comprising: heating at least a portion of a cone-shaped heating member positioned in the heat exchanger with a second fluid at a temperature higher than a temperature of the first fluid in a heated fluid chamber at least partially surrounding the cone-shaped heating member; directing the second fluid from the heated fluid chamber and into the cone-shaped heating member through only an opening formed in the cone-shaped heating member to substantially prevent the second fluid in the heated fluid chamber from being placed in communication with the first fluid in the interior portion of the cone-shaped heating member except through the opening in the cone-shaped member; and mixing the first fluid and the second fluid; and
- conveying the at least one material within the first fluid in the gaseous state out of the transition chamber with the first fluid.
16. The method of conveying a fluid of claim 15, wherein: conveying the first fluid comprising at least one material comprises conveying solid carbon dioxide and at least one of liquid methane and gaseous methane; and
- conveying the at least one material within the first fluid in the gaseous state out of the transition chamber with the first fluid and the second fluid comprises conveying gaseous methane and gaseous carbon dioxide out of the transition chamber.
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Type: Grant
Filed: Nov 3, 2010
Date of Patent: Dec 22, 2015
Patent Publication Number: 20120103561
Assignee: BATTELLE ENERGY ALLIANCE, LLC (Idaho Falls, ID)
Inventors: Terry D. Turner (Idaho Falls, ID), Michael G. McKellar (Idaho Falls, ID)
Primary Examiner: Frantz Jules
Assistant Examiner: Webeshet Mengesha
Application Number: 12/938,826
International Classification: F24H 3/00 (20060101); F25B 29/00 (20060101); F25J 3/06 (20060101); F25J 5/00 (20060101); F28C 3/08 (20060101);